still despite all the technology involved, perhaps the greatest power of social media monday was the ability to remind everyone of what really matters. two of boston's most famous natives. ben affleck and mark wahlberg took to social media sites to express their thoughts. ben posted "such a senseless and tragic day. my family and i send our love to our beloved and resilient boston" and mark, "thoughts and prayers with my hometown boston." he was just here with you yesterday on the show. >> right, and who would have thought that the day would turn so tragic the way it did. and the power of social media brought us together and kept us connected. >> thank you, bianna. we appreciate it. >>> coming up more from boston. we will talk to the eyewitnesses just ten feet from the exp >>> and we are back here in boston, i am here with david able, "the boston globe." thank you for joining us, david. you were right on the finish line at the moment the first blast went off. tell us about what you saw. >> right. so i was there taking video as runners were coming in when i felt the ground shake and i